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NORDAC FLEX (SK 200E ... SK 235E) – Users Manual for Frequency Inverters
WARNING
Unexpected movement due to overload
In case of overload of the drive there is a risk that the motor will "break down" (sudden loss of torque).
An overload may be caused e.g. by underdimensioning of the drive unit or by the occurrence of
sudden peak loads. Sudden peak loads may be of a mechanical origin (e.g. blockage) or may be
caused by extremely steep acceleration ramps (P102, P103, P426).
Depending on the type of application, "breakdown" of the motor may cause unexpected movement
(e.g. dropping of loads by lifting gear).
To prevent any risk, the following must be observed:
•
For lifting gear applications or applications with frequent large load changes, parameter P219 must
remain in the factory setting (100%).
•
Do not underdimension the drive unit, provide adequate overload reserves.
•
If necessary, provide fall protection (e.g. for lifting gear) or equivalent protective measures.
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BU 0200 en-US-4920
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